The lecture you were listening to is over. The bell that rang in the hall signaled the end of class. You get up out of your seat, pick up your things, and walk out the classroom door.
Which kind of nerves sent the signals from your brain to your muscles to initiate your physical movements?
A. Afferent
B. Efferent
C. Hormones
D. Indifferent

The peripheral nervous system (PNS) is made up of nerves and ganglia. These are cranial nerves and spinal nerves. The PNS can further be subdivided into afferent (sensory) division and efferent (motor) division. The afferent division sends sensory information from peripheral organs to the CNS. The efferent or motor division sends out impulses from the CNS to the peripheral effector organs through the somatic nervous system and autonomic nervous system.

The somatic efferent nervous system, supplies motor impulses to the skeletal muscles to initiate movement.

The autonomic or visceral nervous system supplies impulses to cardiac muscle, smooth muscles and to glands.